The lesion at the base of the keratin mound is benign in the majority of cases. Malignancy is present in up to 20% of cases, with squamous cell carcinoma being the most common type. The incidence of squamous cell carcinoma increases to 33% when the cutaneous horn is present on the penis.alignancy is present in up to 20% of cases, with squamous cell carcinoma being the most common type. The incidence of squamous cell carcinoma increases to 33% when the cutaneous horn is present on the penis.
For example, the average human gestation period is 38 weeks. Gestation may normally last anywhere from 37 to 42 weeks, however, and be considered well within the healthy range. Any child born before 37 weeks is considered preterm, and this can be accompanied by any number of health risks.
gestation period - the period during which an embryo develops (about 266 days in humans) gestation. biological time - the time of various biological processes. full term, term - the end of gestation or point at which birth is imminent; a healthy baby born at full term. midterm - the middle of the gestation period. trimester - a period of three months; especially one of the three three-month periods into which human pregnancy is divided.